This article has the steps to find the vml ID of a LUN.
VMware vSphere (All versions).
esxcli storage core device list -d naa.####/eui.#####
esxcli storage core device list -d naa.60#########################
naa.60#########################Display Name: NETAPP Fibre Channel Disk (naa.60#########################)Has Settable Display Name: trueSize: 1048593Device Type: Direct-AccessMultipath Plugin: NMPDevfs Path: /vmfs/devices/disks/naa.60#########################Vendor: NETAPPModel: LUNRevision: 7330SCSI Level: 4Is Pseudo: falseStatus: offIs RDM Capable: trueIs Local: falseIs Removable: falseIs SSD: falseIs Offline: falseIs Perennially Reserved: falseThin Provisioning Status: yesAttached Filters:VAAI Status: unknownOther UIDs: vml.020000000060a#####################################################